Spring-bow for eyeglasses.



G; BAUSGH.

SPRING BOW FOB. EYEGLASSES.

APPLIOATIOH IILED J'UNEZB, 1908.

91 7,837, Patented Apr. 13, 1909.

' 'lnv/enior. li/z'iwessesQ E. g; a T I g 1 UNITED STATES TENT FFTQE.

GEORGE BAUSGH, OF SYRACUSE, NEW YORK.

SPRING-B OW FOR EYE GLASSES.

To all whom it may concern:

Be it known that I, GEORGE BAUSCH, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Spring-Bows for Eyeglasses, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to certain improvements in springbows for eye glasses involving the use of a plurality of separate comparatively thin, flat springs of similar form and dimensions loosely arranged fiatwise in close juxtaposition one upon the other with their ends secured to the posts between the boxes and edges of the lenses.

The object is to obtain greater resiliency and flexibility between the lenses without adding materially to the size or weight of the mounting over what is now commonly used.

Another object is to reduce the liability of breakage of the bow spring and at the same time to enable the spring to be more easily bent or adjusted in fitting the mounting to the nose and eyes of the wearer.

A further object is to detachably secure the ends of the bow spring leaves between the boxes and adjacent edges of the lenses so as to afford as long a spring as practicable and thereby increase its resiliency and flexibility and also to reinforce the ends of the springs against injury by the clamping screws which also secure the nose guard in the boxes.

Other objects and uses will be brought out in the following description.

In the drawingsFigures 1 and 2 are an enlarged top plan and side elevation of my improved lens mounting and portions of the lenses mounted thereon. Fig. 3 is a sectional view taken on line 38, Fig. 2. Fig. 4 is a perspective view of the two leaves forming the bow spring shown as separate one from the other.

I have shown a pair of lenses 1 as secured to suitable posts -2 having boxes -3 at their inner ends and transverse slots 4 between the boxes and adjacent edges of the lenses, said slots l receiving the opposite ends of a bow spring 5. The boxes 3- at the inner ends of the posts are provided with the usual recesses for receiving the attaching ends 6 of suitable nose guards 7 which are secured in place by fastening screws 8, the latter passing through apertures in the attaching Specification of Letters Patent.

Application filed June 26, 1908.

Patented April 13, 1909.

Serial No. 440,600.

serve as a means for clamping or securing the ends of the bow springs to the posts.

The bow spring 5 which forms the subject matter of my present invention is composed of a plurality of, (in this instance two) comparatively thin fiat springs 10-- of similar form and size mounted one upon the other in close juxtaposition and free to yield or flex relatively to each other between their ends, which ends are inserted in the slots l. of the posts 2- between the boxes -3 and adjacent edges of the lenses and are held in place by clamping screws 8. The combined thickness of these two leaves 10 of the bow spring 5-- is substantially equal to the thickness of the ordinary spring but by making them separate and attaching them at their ends to the posts 2, it affords a greater resiliency of the lenses relatively to each other, such resiliency being substantially equal to that of one of the sections under torsional movement of the lenses relatively to each other and at the same time the lenses are held in more perfect alinement by reason of the fact that both springs are acting to maintain such alinement.

The particular advantage in making the bow spring from a plurality of separate comparatively thin leaves is to afford greater resiliency thereby reducing the liability to breakage of such spring under manipulation of the lenses relatively to each other either carelessly or purposely or when adjusting the glasses to the nose and eyes of the wearer. This increased resiliency is due to the thinness of the leaves and their ability to spring relatively to each other under opening or torsional strains to which they are subjected either by careless manipulation or when adjusting for use.

What I claim is:

1. In a lens mounting for eye glasses, a

, other and having their ends secured to said posts.

2. In a lens mounting for eye glasses, a

} comparatively thin flat leaves of similar form and size fitting closely one Within the other and having their ends inserted in said slots, and means for holding said ends in said 15 slots.

In Witness whereof I have hereunto set my hand this 22nd day of June 1908.

GEORGE BAUSCH. Witnesses:

H. E. CHAsE, CAROLINE M. MGCORMACK. 

